Darkstar Banisher 
Creature — Bat Cleric
Flying When Darkstar Banisher enters, exile target nonland permanent with mana value 3 or less an opponent controls. When Darkstar Banisher leaves the battlefield, the exiled card's owner seeks a card that shares a card type with the exiled card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL